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IceJOKER [234]
3 years ago
13

A 30 ky child running at 7 m/s jumps onto a 10 kg sled which was initially at rest. What will be the

Physics
1 answer:
Ede4ka [16]3 years ago
7 0
Hope this helps. If you need clarification just ask me!

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A cyclist reduces his speed from 6.5 m/s to 0.0 m/s with an acceleration of
kolbaska11 [484]

Answer:

a= -1.2 m/s^2

Vi= 6.5 m/s

Vf= 0 m/s

t= 0-6.5/-1.2= <u>5.45 Sec</u>

Explanation:

4 0
2 years ago
Someone please help. science &lt;3 thx<br> ill give 15 pts for it.
STALIN [3.7K]

Answer:

put these numbers in the boxes from up to down. hope this helps! :)

Explanation:

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2 years ago
Two objects that are not initially in thermal equilibrium are placed in close contact. After a while, the temperature of the cod
Dima020 [189]

Answer:

If the temperature of  the colder object rises by the same amount as the temperature of the hotter object drops, then <u>the specific heats of both objects will be equal.</u>

Explanation:

If the temperature of  the colder object rises by the same amount as the temperature of the hotter object drops when the two<u> objects of same mass</u> are brought into contact, then their specific heat capacity is equal.

<u>We can prove this by the equation of heat for the two bodies:</u>

<em>According to given condition,</em>

\Delta T_1=\Delta T_2

\frac{Q_1}{m_1.c_1} = \frac{Q_2}{m_2.c_2}

<em>when there is no heat loss from the system of two bodies then </em>Q_1=Q_2

\frac{1}{m.c_1} =\frac{1}{m.c_2}

\Rightarrow c_1=c_2

  • Thermal conductivity is ultimately affects the rate of heat transfer, however the bodies will attain their final temperature based upon their mass and their specific heat capacities.

The temperature of the colder object will rise twice as much as the temperature of the hotter object only in two cases:

  • when the specific heat of the colder object is half the specific heat of the hotter object while mass is equal for both.

OR

  • the mass of colder object is half the mass of the hotter object while their specific heat is same.
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Question 9 of 10<br> How many carbon (C) atoms are in a molecule of CH,O?
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1 molecule not shure

Explanation:

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3 years ago
Read 2 more answers
Please help me fill out the chart.??
LekaFEV [45]

Answer:unbalanced: have direction,Change an objects motion, causes object to accelerate

Balanced:Do not change an objects motion, Net forces equal sum of all forces on object, and Does not equal 0 N

Explanation: Thats all I know Hoped I helped sum

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3 years ago
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